Lock.



M. HALVORSON.

LOCK- APPLICATION FILED DEC. I4. 1916.

1 ,2% 1,53% Patepted Apr. 3, 1917.

INVENTOR WITNESSES ATTOR N EY lltll a 1; r nip LOCK.

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed December 14, 1916. Serial No. 136,984.

To all whom it may concern:

. Be it known that I, MATHIAS HALVORSON, a citizen of Norway, residingat Hubbard, in the county of Marion and State of Oregon, have inventedcertain new and useful Improvements in Locks, of which the following isa specification.

The present invention relates to locks and is more particularlyconcerned with that type of lock comprising a sliding bolt which islocked in position by a plurality of slidin Fig. 1.

ing tumblers which are operated by a key insertible in the look.

It is a main object of the invention to produce a device as abovedescribed possessing simplicity and durability, the size and arrangementof whose tumblers may be varied so that various combinations may beobtained for these looks.

The features of the invention reside in the specific construction .andcombination and arrangement of parts which will be later referred to indetail as the specification proceeds. It is to'be understood however,that variations and modifications in the construction may be resorted tothat fall within the legitimate scope of the appended claims. 1

In the drawings which illustrate the in vention;

Figure 1 is a front elevation of the lock showing the same as applied tothe usual door.

Fig. 2 is a front view of the look with the face plate removed.

Fig. 3 is an end' view of the lock looking in the direction of the arrow0; as indicated Fig. 4 is a view taken substantially on lines 44 of Fig.1.

Like characters denote similar and like parts throughout thespecification and drawings.

Referring in detail to the drawings the lock, constructed in accordancewith the present invention, preferably comprises two opposing plates '1and 2 which are secured together in juXta-relation by sultable.fastening means, such as the bolts 3 and which provide a housing for thelock mechanism. The inner face of the plate 2, which may be termed theback plate is formed, preferably, adjacent its lower edge with ahomzontally extending recess 4 which provides, when the plates 1 and 2are secured together, a passage way through the lock housing for thesliding bolt 5. The bolt 5 is ofsuch length as will permit both of itsends to extend beyond the passage when the bolt is shifted in itslocking position. One face of 0 the bolt 5 has a suitable recess 6therein to receive a stud 7, the recess 6 being of such length as willlimit to a desired degree the shifting movement of the bolt 5 into andout of looking position. It will also be ob vious that the stud 7prevents the withdrawal or removal of the bolt 5 from the lock housingwhen the plates 1 and 2 are secured together as shown in Figs. 3 and 4.

The inner face of the back plate 2 is fur ther formed with a pluralityof vertical recesses 8, disposed above the recess 4 and communicatingtherewith. These recesses 8 are of a substantially uniform length andare adapted to have slidably disposed therein the tumblers 9 which arepreferably, but not necessarily, of a length corresponding to the lengthof the recesses 8. The lower ends of the tumblers 9 are adapted toengage in the notches 10, of which there are a number corresponding tothe number of the tumblers 9, formed on the upper edge of the slidingbolt 5. i i

A key-way 11 is formed in the back plate 2 and extends. inwardly fromone end of the housing substantially horizontally so as to intersect therecesses 8 at a point below the upper ends of the tumblers when thelatter are in a position shown in full lines in Fig. 2, each tumbler 9being suitably recessed to correspond with a key way 11 in order topermit the latter to extend through the lock housing from one end'to the'furthermost recess 8 without obstruction when the turn blers 9 are, inthe position shown in full lines in Fig. 2. It will thus be seen thatwhen it is desired to unlock the sliding bolt 5 from its position shownin full lines in Fig. 2 and to shift it into position shown in dottedlines of the same figure, it is only 100 necessary to insert a suitablekey into the key way 11 which will lift the tumblers 9 out of thenotches 10 in the bolt 5.

A key 12 is adapted to be inserted in the guide-way 11 and has amultiplicityof teeth 105 or lugs 13 thereon in a number correspond ingto the number of recesses 8, and which engage the tumblers 9 at 14 whenthe key is lifted into the position shown in dotted lines of Fig. 2.When the key is lifted to its fullest extent all of the tumblers 9 aremoved out of the notches 10 of the bolt 5,

flby a handle or finger piece of the key.

It Will be noted that after the tumblers and sliding bolt 5 have beenshifted into position shown in dotted lines of Fig. 2 it will beimpossible to withdraw the key from the key way-.11, this being.especially prevented by the pins 16 projecting laterally into thekey-way 11 adjacent the top wall thereof.

Suitable cutout portions 17 are provided in the key to receive thepin 16when the key is lifted in'the position shown in dotted lines of Fig; 2so as topermit the effective liftingof all of the tumblers 9 to unlockthe bolt 5. Although it is here shown as preferable to provide thesliding bolt with a number of notches corresponding to the number oftumblers and thereby prevent the withdrawal of the-key from the key-Waywhen the bolt is in its'effective position, it may be desired, how ever,to provide several additional notches, not shown, in the bolt so as topermit all of thetumblers to gravitate back intocorresponding notches-inthe bolt and permit the keyto be likewise moved out of the path of theins 16 and fromthe key-way 11.

To effect various combinations of locks constructed 'inaccord'ance'withthe present invention, the provision of a multiplicity of tumblers asshown permits a varying arrangement of the tumblers which may beeffected by varying the. width of certain of the tumblers 9 and oftheircorresponding recesses8. 7, By so varying the width of the tumblersand'their corresponding recesses there must be lilr'e'variationslin thewidths of the'lugs '17 on their respective keys. Furthermore thearrangement of the pins 16 may be varied so that one or more of saidpins will lie out'of alinement with certain other pin'san'd therebynecessitate the recess 7 '17 to' be of varying depths to permit-the keyto be lifted'to itsfullest extent'in order to effect the lifting orshifting of all of the tumbl'ersout of the passage land notches 10.

Thus it will be manifest that by virtue of the "various"arrangements,which may be effected by varyin'g'the widths of the tumblers and thearrangement of the pin 16, that a sufficient number of combinations maybe obtainedin lugs of this type as to render the same desirable. andburglar proof.

'To'lock the lock it is only necessary to lift the key 12 in a positionshown in dotted lines of Fig. 2"which will lift the tumblersentirely'from the passage 41 and permit the bolt fitobeshifted in thefull lines of Fig. 2, and

then by'rel'e'asing the key the tumblers together with the key willgravitate downwardly into the position shown in full lines of Fig. 2. Inthis position the key will meet with no obstructions and may bewithdrawn from the key-way 11. To effect the unlocking of the lock, itis only necessary to insert the key into the key-way and to lift thesame into the position shown in dotted lines of Fig. 2, which as will bereadily understood, lifts all of the 'tumblersfrom' the passageway. landpermits the bolt to be shifted into an unlocking or ineffectualposition.

The front plate 1 of the lock is provided with complementary recesses 11which together with the recess 11 provides the key- Way above referredto. However the recess 11 is reduced at the entrance to the keyway, asclearly shown in Fig. 3, to a small opening 18 which slidably receivesthe guiderib 19 on the key. It will be again readily seen that furthercombinations of the lock may be effected by varying the position of theopening 18 with respect to the keyway 11 thereby necessitating thechange of position of the guide-rib 19 on the key.

For-facilitating the operation of the sliding bolt 5' a suitable handleor gripping means 20 is provided on one end thereof.

The lock may be secured at any convenient portion on a dooras'illustrated in Fig. 3 so r' that an end of the sliding bolt 5 willproject 90 into a keeper 21 secured to the jamb or other suitableportion of a door or like structure.

lVhat I claim: 1. A look comprising a front and back plate adapted to besecured together in juxta-relation to provide a housing for the lockmechanism, one of said plates being formed with a recess extendinghorizontally therethrough, and a multiplicity of vertically arrangedrecesses communicating with said horizontal recess, a bolt slidablydisposed in said horizontal recess and having a plurality of notchesformed therein, tumblers slidably disposed in said bolt for holding thelatter in looking position, said housing having a horizontal key-wayformed therein extending from one end thereof transversely through saidtumblers, a key insertible in said'key-Way and having a multiplicity oflugs formed thereon arranged correspondingly to said tumblers, said keybeing adapted to be lifted in the key-way to bring 'saidlugs inengagement with the tumblers for moving the tumblers out of engagementwith the notches in said sliding bolt, and a plurality of pins laterallyextending into said key-way and adapted to be variably arranged therein,said key having a plurality of recesses therein to receive said variably5 arranged pins, when the key is lifted, to perhalt the effectivelifting movement of the key.

2. A look comprising a housing, a bolt slidably extending through saidhousin a multiplicity of tumblers slidably mounted in the housing insubstantially parallel alinement, said housing having a key-wayextending from one end thereof transversely through said tumblers, aplurality of projections laterally extending into said keyway andadapted to be variably arranged, a key insertible in the key-way andhaving a multiplicity of lugs arranged to engage said tumblers, said keybeing adapted to be shifted to bring the lugs into engagement with thetumblers whereby the latter are moved key having a plurality of recessestherein adapted to receive said variably arranged projections to permitthe effective lifting 15 movement of the key.

In testimony whereof I aflix my signature in presence of two witnesses.

MATHIAS HALVORSON. Witnesses:

' J. J. FosMARK, Toivr DYBOAD.

Copies; of skim patent may be obtained for five cents each, byaddressing the Commissioner of Patenta, Washington, D. 03

